Tomorrow is National Clock-Fuck Day
It's a bi-annual celebration of stupidity.
Celebration begins at 2:00 AM
CORRECTION: due to stupidity, there is NO TWO this Sunday morning. It
has been officially re-designated as three.
Once I had a timer with a really complicated way to set the clock.
There were 3 buttons marked A B and C. The instructions were something like:
1. Hold A while pressing B. Continue holding both buttons until "on
time" flashes on the display (about 5 seconds). Release button B first.
2. Repeatedly press C until the words "set time" and the hour flash.
3. Press A until the hour is correct.
4. Press B. The minute will start flashing.
5. Press A until the minute is correct*
6. Press B. "AM" or "PM" starts flashing.
7. Press A to change it if not already correct
8. Press C for 3 seconds to enter the time
9. Press A to exit settings mode
I would have never figured that one out if it wasn't on the label in
really small print. In a bad translation from the Chinese, with a bunch
of weird misspellings and grammatical oddities.
* - there's no reverse button, and it's VERRRY SLOW to go back around
when you go 1 over.
I like clocks. Well, more specifically, the *display* of time information
(not really interested in mechanisms, etc.). I am constantly looking for
clever or insane ways of "displaying" the current time!
In the late 70's I built a "digital clock" as a XMAS gift for my would-be
in-laws. Packaged it in a hand-made lexan case, etc. As with most of
my gifts, the whole point was that it was unique -- one-of-a-kind.
My best friend, being far more of a capitalist than I, was pushing for
me to turn it into a product. "No, that defeats the one-of-a-kind nature
of it... what 'makes it special'!"
Several years later, he bought my wife and I, this:
as an XMAS gift. While it was a "nice gift", the real message was,
"See, you could have been selling this long before anyone else came
up with the idea!"
<shrug> The clock I'd made for my in-laws was still one-of-a-kind, despite this little jibe.
Anyway, the commercial clock, while being much more professionally made,
has two huge flaws.
First, the buttons to set the time (HOURS, MINUTES, SWEEP SECOND HAND,
PAUSE) "bounce". This is a characteristic of damn near all mechanical
switches -- the contacts don't solidly open and close but, instead,
"bounce" so you get lots of make-break-make-break-make... before
they finally MAKE (or BREAK). When You interface to a switch, you
include a "debouncing circuit" -- so the switch appears to snap on and
snap off, cleanly.
The consequence of the bounce is that when you push a button (e.g.,
MINUTES), as the LED's cycle around the display (like the tip of a
"minute hand") and approach the desired point in time, releasing the
button at the *perfect* time usually causes it to "bounce" quickly
past where you would like it to have stopped. So, you have to repeat
the process (another ~60 seconds) for the minute hand to come around
full circle to HOPEFULLY stop where you'd like it to stop (i.e., one
minute later than where you originally wanted it to stop!).
This is frustrating. OTOH, if it only "bounces a little" and you
don't mind the clock being "fast" a minute or two, you can just ignore
Second, the hour hand is not synchronized with the minute hand. You
can set the hour independently of the minute (which makes sense as you
don't want to spend forever ticking through the minutes from 12:00
to whatever the current time happens to be!). But, there are 4
LEDs for each hour!
The first corresponds to X:00-X:14; the second to X:15-X:29; the third
to X:30-X:44 and the fourth to X:45-X:59.
Given that the HOURS button bounces just like the MINUTES, getting the
clock to "stop" on the correct LED is a bit more trying! E.g., if it is
12:07, you want the hour LED to be the LED directly at the "12" mark;
not the LED one quarter of the way to the "1" mark! If the button
bounces and overshoots, then you'll eventually end up with the clock
displaying 1:46 when it's really 12:46, etc.
A smarter implementation would have automatically advanced the hour hand
4 LED's at a time -- so that it was always at the "correct" LED based on
the current minute hand position!
Now, when *I* design a clock, I treat it simply like a "display"; I
let it talk to a time server and just "display" the time that is
being "served" to it! No fiddling around trying to keep all the
clocks in the house in some "consistent" state!
 Consistent doesn't mean they all have to display the same exact time!
I'm considering an unusual clock display I read about. The design uses 6
full-color LEDs. One of these actually has red, green, and blue LEDs in
a 4-lead package. These are driven by PWM (variable duty cycle) signals
from a one-chip computer (Arduino) and can produce any color. Using the
color code used on electronic components, a LED represents a digit. 6
LEDs display the time.
In college, I learned "Bad Boys Rape Our Young Girls, But Violet Gives
Willingly" as a way to remember the colors:
0 - black (OFF)
1 - brown
2 - red
3 - orange
4 - yellow
5 - green
6 - blue
7 - violet
8 - gray
9 - white
Therefore, the current time (01:45:42) is shown as
BTW, As I write this, I'm less than 12 minutes away from "the 2 o'clock
that doesn't exist" when 1:59:59 is just one second away from 3:00:00.
In my case, I recall the color spectrum as Roy G Biv (in order of increasing
frequencies). Prepend Black and Brown and append Grey and White (eliding
Interesting -- relying on accurate color perception (7% of men have
some form of color-blindness).
I opt for more "head trips". E.g., a braille cell consists of
2 columns of 3 dots (there is also an 8 cell braille but I'm
talking "old school", here). Digits are indicated by prefacing
a cell with the "digit" marker. Then, A-J become 1-0. For example,
O. O. OO OO O. OO OO O. .O .O
.. O. .. .O .O O. OO OO O. OO
.. .. .. .. .. .. .. .. .. ..
are the encodings for a thru j (1 thru 0 if prefaced by the "number"
So, arrange groups of 6 LEDs in cells like this. Then, illuminate the
LEDs corresponding to the "bumps" in the braille character.
<shrug> No big deal.
When folks see it and you explain it to them, they typically respond
with a nonplussed "Oh".
The folks who think about it realize the "goof" involved: the people
who would understand the encoding (blind) can't *see* the LED's! And,
the folks who can *see* the LEDs don't understand the encoding! I.e.,
the whole point of the clock is to get folks to come to this realization.
(of course, there are exceptions)
I have another *alarm* clock that is a conventional (dial) telephone.
Pick up the receiver and "At the tone, the time will be...". *Dial*
an alarm time and the phone *rings* at that time!
Again, it's just a "goof" on casual observers.
[I want to redo this design to make it fit into an old candlestick
I'd also like to build a unary clock in a set of glass tubes. But,
getting particular lengths of glass pipe means having it cut *for*
you. As a result, I have to have all my i's dotted and t's crossed
before I can head down that path (dealing with heat dissipation in
glass pipes is a bit of a crap shoot).
I'm working on a Rube Goldberg design, currently (mechanical) to form
a piece of kinematic "lawn sculpture". Folks looking at it will just
think "that's interesting". The fact that it is a timepiece wouldn't be
obvious to most (any??).
[This is really hard! It was relatively easy for Goldberg to come up
with his contraptions -- they could easily defy the laws of nature,
didn't have to be lubricated, maintained outdoors, etc. Trying to
make something *physical* along the same lines is considerably
"Stormin Mormon" wrote in message </DIV>
<DIV> </DIV> <DIV>On 3/13/2016 5:46 PM, rbowman wrote:</DIV> <DIV>> On 03/13/2016 12:50 AM, Mark Lloyd wrote:</DIV> <DIV>>></DIV> <DIV>>> In college, I learned "Bad Boys Rape Our Young Girls, But = Violet
Gives</DIV> <DIV>>> Willingly" as a way to remember the colors:</DIV> <DIV>></DIV> <DIV>> It was a little more racist in my day...</DIV> <DIV> </DIV> <DIV>That cast a bit more of a black cloud</DIV> <DIV>over the matter. Willingly to silver</DIV> <DIV>and gold (help remember that silver and</DIV> <DIV>gold denote different tolerance levels.)</DIV> <DIV> </DIV> <DIV>-- </DIV> <DIV>.</DIV> <DIV>Christopher A. Young</DIV> <DIV>learn more about Jesus</DIV> <DIV>. www.lds.org</DIV> <DIV>.</DIV> <DIV><U><FONT size=4>This is on standard Resistor </FONT></U></DIV> <DIV><FONT size=4>Gold = 5% – tolerance</FONT></DIV> <DIV><FONT size=4>Silver = 10% - tolerance</FONT></DIV> <DIV><FONT size=4>No color = 20% - tolerance</FONT></DIV> <DIV><FONT size=4></FONT> </DIV> <DIV><U><FONT size=4>Capacitor's are some what = different</FONT></U></DIV> <DIV><FONT size=4>for different type of configuration </FONT></DIV> <DIV><FONT size=4>Tolerance Varies with type</FONT></DIV> <DIV><FONT size=4>Mica = REC-115a</FONT></DIV> <DIV><FONT size=4>Ceramics = Retma Rec-107a</FONT></DIV> <DIV><FONT size=4>Military = Jan-C-20a</FONT></DIV> <DIV><FONT size=4>Paper Military Standard Mil-C-91a</FONT></DIV> <DIV><FONT size=4>And I believe there are more!!!</FONT></DIV> <DIV><FONT size=4></FONT> </DIV> <DIV><FONT size=4>73 = KA2AYS</FONT></DIV></DIV></DIV></BODY></HTML>
Yes. I hope I got all mine reset.
There are things like most computers and cell phones that do it
There are those that PRETEND to set themselves but really don't except
the +/- 1 hour DST adjustment. Most need to be reset manually to
compensate for errors during the half year (many are a little fast).
I don't use the clock in my microwave.
If DST is good for something, that would be giving you a chance to set
your clocks right.
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